Granite
Phaneritic Plutonic Felsic Rock
Category
Browse carved stone specimens identified by the Rock Identifier community.
Granite
Phaneritic Plutonic Felsic Rock
Blue Calcite
Calcium Carbonate (CaCO3)
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
Blue Quartzite (Aventurine)
Silicon Dioxide (SiO2) with Dumortierite or Crocidolite inclusions
Nephrite Jade
Tremolite-Actinolite solid solution series, Ca2(Mg,Fe)5Si8O22(OH)2
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Turquenite (Dyed Howlite)
Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)
Serpentine
Antigorite / Lizardite / Chrysotile [(Mg,Fe)3Si2O5(OH)4]
Snowflake Obsidian
Spherulitic Obsidian (Amorphous volcanic glass with Phenocrysts of Cristobalite)
Rose Quartz
Silicon Dioxide (SiO2)
Chalcedony (Carnelian Agate)
Cryptocrystalline quartz (SiO2) with Iron Oxide inclusions
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Carnelian (Orange Agate)
Carnelian (variety of Chalcedony, SiO2)
Unakite
Unakite (altered granitic rock: SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))
Jasper with Epidote (Unakite-related)
Epidotized Quartzite (composed of Quartz, Epidote, and Feldspar)
Dumortierite Quartz
Dumortierite-bearing Quartz (Al7BO3(SiO4)3O3)
Snowflake Obsidian
Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Green Aventurine
Quartz (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Sandstone
Sandstone (Arenite)
Green Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Red Sandstone
Arenite (Ferruginous Sandstone)
Tiger's Eye (Golden)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)
Unakite
Epidotized Granite
Carnelian Agate
Silicon Dioxide (SiO2) with Iron Oxide impurities
Unakite
Unakite (Epidotized Granite)
Carved serpentine wing sculpture
Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
Granite
Granite (Felsic Plutonic Rock)
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
Granite
Granite (Felsic Plutonic Rock)
Diorite (Salt and Pepper Rock)
Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)
White Marble
Recrystallized Calcite / Calcium Carbonate (CaCO3)
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Tiger's Eye (and Hematite/Jasper Matrix)
SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
Fancy Jasper (Agate/Chert mix)
Silicon Dioxide (SiO2) with various inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities